Classification
658 - General management
41
340 - Law
38
005 - Computer programming, programs & data
37
300 - Social sciences
33
330 - Economics
31
620 - Engineering & allied operations
31
650 - Management & auxiliary services
27
616 - Diseases
19
900 - History & geography
19
320 - Political science
16
004 - Data processing & computer science
13
510 - Mathematics
13
500 - Natural sciences & mathematics
11
610 - Medicine & health
11
618 - Gynecology, obstetrics, pediatrics & geriatrics
11
150 - Psychology
9
700 - The arts; fine & decorative arts
9
370 - Education
8
515 - Analysis
8
621 - Applied physics
8
100 - Philosophy & psychology
7
546 - Inorganic chemistry
7
338 - Production
6
519 - Probabilities & applied mathematics
6
520 - Astronomy & allied sciences
6
530 - Physics
6
001 - Knowledge
5
158 - Applied psychology
5
301 - Sociology & anthropology
5
304 - Factors affecting social behavior
5
512 - Algebra
5
615 - Pharmacology & therapeutics
5
617 - Surgery & related medical specialties
5
629 - Other branches of engineering
5
660 - Chemical engineering
5
000 - Computer science, information & general works
4
410 - Linguistics
4
571 - Physiology & related subjects
4
611 - Human anatomy, cytology & histology
4
657 - Accounting
4
306 - Culture & institutions
3
332 - Financial economics
3
509 - Historical, geographic & persons treatment
3
540 - Chemistry & allied sciences
3
770 - Photography, photographs & computer art
3
910 - Geography & travel
3
006 - Special computer methods
2
025 - Library operations
2
140 - Specific philosophical schools
2
297 - Islam, Babism & Bahai Faith
2
more ...